JP2005129202A - Optical disk device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the following problems, in a conventional optical disk device of a tray system, that a structure becomes complicate and the number of parts also increases, so that an optical disk device is caused to increase its weight, since the whole optical disk is set to be drawn out along the drawing amount of the tray from a cabinet. <P>SOLUTION: This optical disk device 1 is provided with a cabinet 2 having an opening portion 2c, a tray 3 insertably and drawably held by the cabinet 2 and brought in and out to and from the opening portion 2c, and a rotational driving portion provided at the tray 3, holding and rotationally driving an optical disk. A distance from an end of the opening portion 2c to a rotational center of the rotational driving portion in a state of maximally drawing out the tray 3 is made to be smaller than an optical disk radius having a maximum diameter capable of being mounted to the rotational driving portion. This allows the optical disk device 1 to be light-weighted. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an optical disc apparatus that is used internally or externally in an electronic apparatus such as a personal computer. The present invention also relates to a disk device such as a magnetic disk device.

  FIG. 9 is an external view of a conventional tray type optical disc apparatus, and FIG. 10 is an external view of the conventional tray type optical disc apparatus with the top portion removed. The optical disc apparatus 1 has a housing 2 and a tray 3, and FIGS. 9 and 10 show a state in which the tray 3 is pulled out from the housing 2. The housing 2 is composed of a top 2a and a bottom 2b. The tray 3 is provided with a pickup module 4. The pickup module 4 includes an optical pickup 5 constituting an optical system, a spindle motor 4a for rotating the disk, and a tray side circuit board 4c constituting a control circuit. The spindle motor 4a has a disk mounting portion 4b for mounting and rotating the disk. Rails 6 are provided on both sides of the tray 3, and both sides are fitted to the rails 7 so as to be slidable in the disk drawing direction. The rail 7 is also fitted to rail guides 8 provided on the inner surfaces of both sides of the housing 2 so as to be slidable in the disk pull-out direction, and the tray 3 can be pulled out of the housing 2 so that the disk can be attached and detached. The amount of the tray 3 pulled out is set so that the entire mounted optical disk is pulled out from the housing 2 and exposed when the tray 2 is pulled out from the housing 2 to the maximum.

  A casing-side circuit board 9 constituting a control circuit is provided on the bottom 2 b of the casing 2. The housing side circuit board 9 is provided with a connector 9a for supplying power from outside and inputting / outputting signals. The casing side circuit board 9 and the tray side circuit board 4 c provided on the tray 3 are connected by a flexible printed cable 10. The flexible printed cable 10 is substantially U-shaped, and one arm of the flexible printed cable 10 is folded and connected to the tray side circuit board 4c. The folding portion 10a moves in parallel with the direction in which the tray 3 is put in and out as the tray 3 is put in and out.

As a prior example, there are (Patent Document 1) (Patent Document 2) and the like.
JP 7-254199 A Japanese Patent Laid-Open No. 2003-22599

  In the conventional tray-type optical disc apparatus, the amount of pull-out of the tray 3 is set so that the entire mounted optical disc is pulled out from the housing 2 and exposed when it is pulled out from the housing 2 to the maximum. The amount of drawer is large. Therefore, in order to secure this pull-out amount, the sliding structure of the rail portion 6 and the rail 7 on both sides of the tray 3 and the sliding of the rail guide 8 provided on the inner surfaces of both sides of the rail 7 and the housing 2 are provided. A two-stage sliding fitting structure of a moving fitting structure is required. This complicates the structure and increases the number of parts, which causes an increase in the weight of the optical disk apparatus.

  In order to solve such a problem, in the present invention, the distance from the opening end to the rotation center of the rotation drive unit in the maximum drawer state of the tray is made smaller than the radius of the largest optical disc that can be mounted on the rotation drive unit. .

  According to the present invention, the weight of the optical disc apparatus can be reduced.

  According to a first aspect of the present invention, there is provided a housing having an opening, a tray that is detachably inserted into and removed from the housing, and a rotation driving unit that is provided in the tray and holds and rotates the optical disk. An optical disk apparatus provided with a distance between the end of the opening and the rotation center of the rotation drive unit in the maximum pull-out state of the tray smaller than the radius of the largest optical disk that can be mounted on the rotation drive unit Even when the tray is pulled out from the housing to the maximum extent, the fitting between the tray and the housing is maintained without a rail, so that the structure is simplified and the number of parts is reduced, reducing the weight of the optical disk device. It is something that can be done.

  The best mode for carrying out the invention will be described below with reference to the drawings.

  FIG. 1 is an external view of a state in which a tray is pulled out by an optical disk apparatus according to an embodiment of the present invention. FIG. 2 is a state in which the tray is pulled out by an optical disk apparatus according to an embodiment of the present invention. FIG. 3 is a side view for explaining the mounting of the optical disk of the optical disk apparatus according to one embodiment of the present invention, and is a diagram showing a state in which the tray is pulled out to the maximum. FIG. 4 is another embodiment of the present invention. FIG. 5 is an external view of the optical disk device in which the tray is pulled out, FIG. 5 is an external view of the optical disk device in another embodiment of the present invention, in which the tray is pulled out, and the top plate of the housing is removed, FIG. FIG. 7 is a side view for explaining the mounting of an optical disk in an optical disk apparatus according to another embodiment of the present invention, and FIG. 7 is a front view of the tray portion of the optical disk apparatus according to another embodiment of the present invention. FIG, 8 is an external view to remove the top plate of and housing in a state of accommodating the tray of the optical disc apparatus in another embodiment of the present invention.

  1 and 2, the optical disc apparatus 1 has a housing 2 and a tray 3. 1 and 2 show a state in which the tray 3 is pulled out from the housing 2 to the maximum extent. The housing 2 is composed of a top 2a and a bottom 2b. The tray 3 is provided with a pickup module 4. The pickup module 4 includes an optical pickup 5 constituting an optical system, a spindle motor 4a for rotating the disk, and a tray side circuit board 4c constituting a control circuit. The spindle motor 4a has a disk mounting portion 4b for mounting and rotating the disk.

  There are rails 6 on both sides of the tray 3, and both rails 6 are fitted to rail guides 8 provided on the inner surfaces of both sides of the housing 2 so as to be slidable in the disk drawing direction. 3 can be pulled out of the housing 2 so that the disk can be attached and detached. A bezel 11 is attached to the side of the tray 3 on the drawer side. The bezel 11 is configured to close the opening 2c of the housing 2 when the tray is stored. Further, the tray 3 is provided with a missing portion 3a on one side of the rail portion 6 side where the disc partially protrudes from the tray 3 when the disc is loaded.

A connector 9a is provided on the rear side 2d opposite to the opening 2c of the housing 2, and data is transmitted by being connected to other electronic devices such as a computer through the connector 9a. . Further, the connector 9a is provided on the housing side circuit board 9 constituting the control circuit. The case-side circuit board 9 is fixed to the bottom 2b of the case 2 by screwing or locking. The housing side circuit board 9 and the tray side circuit board 4c are connected by a flexible printed cable 10. The flexible printed cable 10 has a substantially V shape or a substantially U shape, and a part (shaded portion A in the figure) is bonded to the bottom 2 b of the housing 2. An end portion close to the bonded portion is connected to the housing side circuit board 9 via a connector 9b. The portion of the flexible printed cable 10 that is not bonded to the bottom 2b is folded back at the folded portion 10a and connected to the tray side circuit board 4c. The folding portion 10a moves in the direction of pulling out the tray 3 when the tray 3 is stored in or pulled out of the casing 2. When the tray 3 is stored, the folded-back portion 10a is closest to the housing-side circuit board 9, but the housing-side circuit board 9 is provided with a relief portion 9c in order to avoid contact between the folded-back portion 10a and the housing-side circuit board 9. Yes.

  In the state in which the tray 3 is pulled out from the housing 2 to the maximum extent, the distance from the end of the opening 2c of the housing 2 to the rotation center of the spindle motor 4a (B in FIG. 3B) is the distance to the disk mounting portion 4b. It is smaller than the radius of the largest optical disc that can be mounted. That is, the maximum pull-out amount of the tray (C in FIG. 3B) is set so that the entire mounted optical disk is not exposed to the disk mounting portion 4b and part of the optical disk is in the housing 2. . The maximum pull-out amount C is set by regulating the sliding amount of the rail guide 8 with respect to the rail portion 6 by a locking portion (not shown) provided on the rail portion 6 and the rail guide 8. The tray 3 is provided with a notch 3b that is partially cut out at the housing side end, and the housing 3 side end of the tray 3 is recessed toward the spindle motor 4a.

  As shown in FIG. 3 (a), in the conventional optical disk apparatus, the amount of tray withdrawal C is larger than the maximum diameter of the optical disk, so the disk is mounted close to the disk mounting portion 4b in the direction of the rotation axis of the spindle motor 4a. As shown in FIG. 3 (b), in the optical disc apparatus according to the embodiment of the present invention, the tray withdrawal amount C is smaller than the maximum diameter of the optical disc, but by setting C to an appropriate value, The optical disk can be mounted by sliding the optical disk in the direction of J, aligning the hole in the center of the optical disk with the disk mounting portion 4b, and pressing the optical disk in the direction of arrow K. At that time, the shape of the cutout portion 3b is set so as to avoid the front end portion 12 in the sliding direction of the optical disc from colliding with the tray 3. The tray withdrawal amount and the cutout portion 3b cutout amount are set in consideration of the detachability of the disc. For example, when the distance D from the end 3d of the side surface 3c of the notch 3b to the top plate 2a of the housing 2 is 4 mm, the distance E from the side 3c of the notch 3b to the rotation center of the spindle motor 4a is 45 mm. When the distance B from the opening 2c side end of the housing 2 to the rotation center of the spindle motor 4a when the tray is fully pulled out is 30 mm or more, it has been confirmed that the optical disk can be mounted without any trouble by the above mounting method.

  Depending on the distance D from the end 3d of the side surface 3c of the notch 3b to the top plate 2a of the housing 2 and the maximum pull-out amount of the tray 3, the disk can be attached and detached without any trouble even if the notch 3b is not provided. In some cases, the cutout portion 3b can be omitted.

  With the above configuration, since the tray 3 does not come out of the housing 2, the fitting of the rail portion 6 and the rail guide 8 is maintained even when the tray 3 is fully pulled out. That is, the rail portion 6 and the rail guide 8 can be slidably fitted in the disk pull-out direction without the need for a rail as in the prior art, thereby simplifying the structure and reducing the number of components, thereby reducing the number of components. Can be reduced in weight. Further, by providing a cutout portion 3b with a part cut out at the housing side end portion of the tray 3 and the housing side end portion of the tray 3 being recessed toward the spindle motor 4a, the disk can be attached and detached more. It becomes easy and operability is improved. Further, since the amount of drawer 3 is less than that of the conventional technique, the length of the flexible printed cable 10 can be shortened, and the casing side circuit board 9 and the tray side circuit board 4c can be connected at a lower cost. .

In the present embodiment, the end of the tray 3 on the drawer direction casing side is provided with a notch 3b that is concave on the spindle motor 4a side. The tray 3 may be configured to be recessed in the direction of the rotation axis of the spindle motor 4a. Further, the tray 3 is lowered in the direction of the rotation axis of the spindle motor 4a as it goes from the spindle motor 4a toward the drawer direction casing, in other words, the tray 3 is mounted as it goes from the spindle motor 4a toward the drawer direction casing. The structure which leaves | separates from an optical disk may be sufficient.

  That is, when considering the distance between the disk mounting surface facing the data reading surface of the optical disk and the mounted optical disk when the optical disk is mounted on the disk mounting portion 4b of the spindle motor 4a, the tray 3 having these configurations is There will be a portion where the distance between the optical disk and the disk mounting surface is larger on the side of the housing in the pulling direction than the spindle motor 4a, and when the optical disk is mounted on the tray 3 pulled out from the housing 2, or the optical disk is removed from the tray 3. When removing, it is possible to avoid the front end portion 12 of the optical disc from colliding with the tray 3.

  Next, an optical disk device according to another embodiment of the present invention will be described in detail with reference to FIGS. 4, 5, and 6. FIG.

  In the present embodiment, the tray 3 is configured such that a part of the disk protrudes from the housing 2 side of the tray 3 when the disk is mounted. That is, the distance E from the rotation center of the spindle motor 4a to the side surface 3e of the tray 3 on the housing 2 side is smaller than the maximum diameter of the disc to be mounted. The distance E is set in consideration of the detachability of the disc. As shown in FIG. 6, in such a configuration, the tray withdrawal amount C is smaller than the maximum diameter of the optical disk, but the optical disk can be inserted in the direction of arrow J by setting the tray withdrawal amount C to an appropriate value. The optical disk can be mounted by sliding the hole in the center of the optical disk to align with the disk mounting portion 4b and pressing the optical disk in the direction of arrow K. For example, when the distance D from the end 3f of the side surface 3e of the tray 3 on the housing 2 side to the top plate 2a of the housing 2 is 4 mm, from the side surface 3e on the housing 2 side of the tray 3 to the rotation center of the spindle motor 4a. If the distance E is 35 mm and the distance B from the opening 2c side end of the housing 2 to the center of rotation of the spindle motor 4a when the tray is fully pulled out is 30 mm, the optical disk can be mounted without any problem by the above mounting method.

  Moreover, the edge part where the side surface 3e by the side of the housing | casing 2 of the tray 3 and the surface of the tray 3 cross may be chamfered, and the inclined part 3g may be formed. This further improves the detachability of the disk. Similarly, the same effect can be obtained by providing a chamfered inclined portion at the end 3d of the side surface 3c of the notch 3b according to the embodiment described with reference to FIG.

  In this embodiment, by adopting such a configuration, the size of the tray 3 in the pull-out direction is reduced, so that the volume of the tray 3 is reduced and the weight can be reduced. Further, the disk can be easily attached and detached, and the operability is improved.

  In the present embodiment, when the tray 3 is pulled out to the maximum, there is no or little portion of the tray 3 remaining in the housing 2, so that the rail 7 is provided as in the conventional technique. That is, rails 6 are provided on both sides of the tray 3, and both sides are fitted to the rails 7 so as to be slidable in the disk drawing direction. The rail 7 is also fitted to rail guides 8 provided on the inner surfaces of both sides of the housing 2 so as to be slidable in the disk pull-out direction, and the tray 3 can be pulled out of the housing 2 so that the disk can be attached and detached.

However, for example, when the rail portion 6 is extended to the housing 2 side by projecting from the side surface 3e on the housing 2 side of the tray 3, the rail portion 6 and the rail guide 8 are slidably fitted in the entire movement range of the tray 3. Thus, the rail 7 can be removed and the weight can be further reduced. In this case, the protruding portion 6a of the rail portion 6 is shaped so as to ensure the required strength. However, as shown in FIG. 7, the rail portion 6 is separated from the tray 3, and the rail portion 6 is required. It may be made of a material that can ensure a sufficient strength. In this case, fixing of the rail portion 6 to the tray 3 includes fixing by an adhesive, fixing by screwing, fixing by welding after providing a welding portion, fixing by locking after providing a locking portion, or A combination of these can be fixed. If this structure is used, the rail part 6 can be strengthened, and the optical disk apparatus can be reduced in weight by reducing the volume of the tray 3.

  Further, by setting the depth G of the tray 3 and the length H in the tray pulling direction of the case side circuit board 9 shown in FIG. 3 and the housing side circuit board 9 can be configured so as not to overlap in the direction of the rotation axis of the spindle motor 4a (not shown). In the conventional optical disc apparatus, the tray and the case side circuit board overlap each other in the direction of the rotation axis of the spindle motor 4a. Therefore, the thin optical disc apparatus uses a thin printed board that is more expensive than a general printed board. You may have to. However, in this configuration, since the tray 3 and the case-side circuit board 9 do not overlap in the direction of the rotation axis of the spindle motor 4a, an inexpensive general thickness printed board can be used for the case-side circuit board 9.

  Further, in the embodiment shown in FIG. 5, the amount of the tray 3 pulled out is such that the entire mounted optical disk is pulled out from the housing 2 and exposed when the tray 3 is pulled out from the housing 2 to the maximum as in the prior art. It can also be set. Even in this case, it is possible to obtain an effect of reducing the weight by reducing the volume of the tray 3. In addition, by appropriately setting the depth G of the tray 3 and the length H of the casing-side circuit board 9 in the tray drawing direction, the tray 3 and the casing-side circuit board 9 can be connected to each other when the tray 3 is stored in the casing 2. Since it can be configured not to overlap in the direction of the rotation axis of the spindle motor 4a, and the thickness of the circuit board can be avoided from affecting the thickness of the optical disk apparatus, a circuit having a general thickness that is inexpensive in a thin type optical disk apparatus. A substrate can be used.

  The optical disc device of the present invention can be applied to an optical disc device that is used by being connected to an electronic device by being built in or externally attached, and particularly applicable to a thin and light optical disc device.

1 is an external view of a state in which a tray is pulled out by an optical disc apparatus according to an embodiment of the present invention. FIG. 3 is an external view of the optical disk apparatus according to an embodiment of the present invention with the tray pulled out and the top plate of the housing removed. The figure of the state which pulled out the tray to the maximum with the side view explaining attachment of the optical disk of the optical disk device in one embodiment of this invention FIG. 6 is an external view of a state in which a tray is pulled out by an optical disc apparatus according to another embodiment of the present invention. FIG. 6 is an external view of the optical disc apparatus according to another embodiment of the present invention, in which the tray is pulled out and the top plate of the housing is removed. The side view explaining attachment of an optical disk with the optical disk apparatus in another one Embodiment of this invention The front view of the tray part of the optical disk apparatus in another one Embodiment of this invention FIG. 5 is an external view of the optical disk device according to another embodiment of the present invention in which the tray of the optical disk device is stored and the top plate of the housing is removed. External view of a conventional tray-type optical disk device Figure with the top removed from the external view of a conventional tray-type optical disk device

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Optical disk device 2 Case 2a Top part 2b Bottom part 2c Opening part 2d Rear side part 3 Tray 3a Deletion part 3b Notch part 3c Side face 3d End part 3e Side face 3f End part 3g Inclination part 4 Pickup module 4a Spindle motor 4b Disk mounting part 4c Tray side circuit board 5 Optical pickup 6 Rail portion 6a Projecting portion 7 Rail 8 Rail guide 9 Housing side circuit board 9a Connector 9b Connector 9c Escape portion 10 Flexible printed cable 10a Folded portion 11 Bezel 12 Tip portion

Claims (13)

A housing having an opening;
A tray that is detachably held with respect to the housing and enters and exits from the opening;
An optical disk device provided with a rotation drive unit that is provided on the tray and holds and rotates the optical disk;
An optical disc apparatus characterized in that the distance from the opening end to the rotation center of the rotation drive unit in the maximum drawer state of the tray is smaller than the radius of the largest optical disc that can be mounted on the rotation drive unit. The housing includes a rail guide portion,
The tray includes a rail portion,
The optical disc apparatus according to claim 1, wherein the tray is held so as to be freely inserted into and removed from the housing by sliding between the rail guide portion and the rail portion. The optical disc apparatus according to claim 2, wherein the rail portion is configured separately from the tray, and is fixed to the tray. The optical disc apparatus according to claim 1, wherein the tray has a recess on a side in a drawer direction casing. The optical disc apparatus according to claim 1, wherein the tray has a recessed portion recessed in a direction of a rotation axis of the rotation driving unit on a side in a drawer direction casing. The optical disc apparatus according to claim 1, wherein the tray has a portion on a side in a pull-out direction housing where a distance from an optical disc having a maximum diameter that can be mounted held by the rotation driving unit is increased. The optical disc apparatus according to claim 1, wherein the distance between the tray and the maximum diameter optical disc that can be mounted and held by the rotation driving unit increases toward the housing in the pull-out direction. The optical disc apparatus according to claim 1, wherein the tray has a concave portion that is concave toward the rotation driving unit on a side in a drawer direction casing. 9. The optical disc apparatus according to claim 8, wherein a part of an optical disc having a maximum diameter that can be mounted and is held by the rotation drive unit protrudes from the recess. The optical disc apparatus according to claim 1, wherein the tray has a notch on a side in a drawer direction casing. 11. The optical disc apparatus according to claim 10, wherein a part of an optical disc having a maximum diameter that can be mounted and is held by the rotation drive unit protrudes from the cutout portion. 2. The optical disk apparatus according to claim 1, wherein a part of an optical disk having a maximum diameter that can be mounted and held by the rotation driving unit protrudes from an end of the tray on the housing side in the pull-out direction. 13. The optical disc apparatus according to claim 12, wherein in a state where the tray is housed in the casing, the circuit board provided in the casing and the tray do not overlap in the rotation axis direction of the rotation driving unit. .

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